Delta冲刺试题 Test 4 口语 Question 4 重新选题

阅读材料

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The History of Climate Change

We know about past climate by studying the geological record and evidence of past glaciation. If we look at where the glaciers were, we can reconstruct a history of the ice ages that have affected our planet. Earth’s climate in generally stable; however, average surface temperatures have varied throughout history. These temperature changes form a regular cycle that is approximately 100,000 years long. We are not entirely certain what caused the lower temperatures of Earth’s ice ages, but we do know that the transition from the last ice age to the present warm period took thousands of years.

听力材料

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口语题目

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The professor discussed studies of the ice in Greenland. Explain how this research has advanced our understanding of past climate change.

答题辅导

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1、题目关键词：explain

2、答题要领：

(1)summarize the point presented in the reading material.

(2)explain the point presented in the listening material.

3、阅读材料要点：

(1)Geological record and evidence of past glaciation help us understand climate change.

(2)Earth's climate is generally stable. The temperature changes form a regular cycle that takes a very long time.

4、听力材料要点：

(1)The ice in Greenland indicates that climate change may not always be gradual. The layers of the ice show a few rapid climate changes during a period of global warming.

(2)During the latest ice age, the climate might have fluctuated widely. The change from the latest ice age to the present warm period might have taken less than a human life.

5、模板：

(1)In this set of materials, the reading passage is (the title of the reading passage) and the listening material is a lecture on this topic.

(2)The reading material mainly introduces ...

(3)In the listening material, the professor discusses ...

(4)First,... Second,...